You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
SessionsArea: what it touches
Bug FixesKind: in v2.1.288,
Bug FixesSection of the release
What
A transcript is the file where Claude Code saves a session's conversation. Several things rewrite it: removing messages, compaction (shortening a long conversation into a summary) and moving a session. Each file now has a lock:
Rewrites wait for any read of the file in progress to finish.
Reads wait for any rewrite in progress to finish.
A rewrite that waits too long stops waiting and logs "Transcript rewrite stopped waiting after".
Compaction also keeps a record of the messages it removes, and saved transcript entries now carry a version field.
Why
This lowers the risk of a damaged or half-written transcript when compaction happens while a session is being resumed.
